Question

what is the electron configuration for titanium? kr 4p^6, 3d^8 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 4p^2 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^2 1s^2, 2s^2, 3s^2, 4s^2, 2p^6, 3p^6, 4p^2 question 2 what is the electron configuration of iodine? kr 4d^10, 5s^2, 5p^5 kr 5s^2, 4d^10, 5p^5 xe 5s^2, 4d^10, 5p^5 ar 4s^2, 3d^10, 4p^6, 5s^2, 4d^10, 5p^5

Explanation:

Step1: Recall titanium's atomic number

Titanium (Ti) has atomic number 22. Electrons fill orbitals in order of increasing energy following the Aufbau - principle.

Step2: Write electron - filling order

Electrons fill orbitals as 1s, 2s, 2p, 3s, 3p, 4s, 3d. The s - subshell can hold 2 electrons, p - subshell can hold 6 electrons, and d - subshell can hold 10 electrons.

Step3: Determine electron configuration

1s²2s²2p⁶3s²3p⁶4s²3d² gives a total of 2 + 2+6 + 2+6 + 2+2 = 22 electrons.

Step4: Recall iodine's atomic number

Iodine (I) has atomic number 53.

Step5: Use noble - gas core notation

The noble - gas core before iodine is krypton (Kr) with atomic number 36. After filling the Kr core, we need to account for 53 - 36=17 more electrons.

Step6: Determine iodine's electron configuration

These electrons fill as 4d¹⁰5s²5p⁵. The correct noble - gas core notation for iodine is [Kr]4d¹⁰5s²5p⁵.

Answer:

For the electron - configuration of titanium: 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d²
For the electron - configuration of iodine: [Kr] 4d¹⁰, 5s², 5p⁵